| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_988b7f8a2310e91454e30e89bc4cfac2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-02 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-65
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F110-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-654
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-658
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-65 |
| filingDate |
1999-04-16^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2002-11-19^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ca7f79e64d16da7fb2c53ea3c87b7ef
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_36e042c4f442ed7c2bf7230b3ea321f5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_256ee5675e292e35c7bc5b821dac3896
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6c6f7fcb54625c49e3dba32a29cfbf2 |
| publicationDate |
2002-11-19^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6482764-B1 |
| titleOfInvention |
Method for producing a supported catalyst for ethylene polymerization and ethylene/α-olefin copolymerization |
| abstract |
A method for producing a supported catalyst useful in polymerization of ethylene and copolymerization of ethylene and alpha-olefin is disclosed. The method includes treating the magnesium-containing carrier with a titanium compound containing oxygen atom(s), wherein said carrier is obtained by reaction of an organomagnesium compound of the structure of MgPh2.nMgCl2.mR2O (n=0.37~0.7; m>=1; R20=ether; Ph=phenyl) with an organic chloride compound in a mole ratio of organic chloride compound/Mg>=0.5, at -20~80° C. In one embodiment, the organic chloride compound may be carbon tetrachloride. A specific catalyst is provided whose activity is low in the beginning but slowly rises to a sufficient degree as the process of polymerization progresses, the polymer produced with the use of said catalyst having high bulk density, a well adjusted particle size distribution, and a narrow molecular weight distribution. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6803338-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6831033-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7045478-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6762145-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2001031694-A1 |
| priorityDate |
1998-04-17^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |